If you're a woman who's 35 years old, you probably thought you'd be done with acne by now. But you probably didn't realize that acne -- pimples, blackheads, whiteheads and inflammation -- affects about half of all adult women at some point in their lives, according to the website Acne.org.

Stress can come from any number of sources that can sometimes catch you off-guard, but its effects on the body have a fairly predictable pattern. Most people carry stress tension in the shoulders, neck and head -- which is why a stressful day can bring on a nasty headache.

Tinted moisturizer is foundation's sleek and sophisticated cousin. Instead of full coverage, it provides a sheer finish but has the added benefit of extra hydration.

You don’t need a prescription to get effective skin care products. Some skin conditions may require prescription-strength treatments, but if your skin has no serious issues, over-the-counter products may be right for you. These products range from cleansers to moisturizers to special treatments.

Keratin is a protein made by cells in your skin that make up your hair and nails. As keratin cells naturally push upward through the skin, they die and then harden, turning into your hair or nails.

Scars are made of fibrous, connective tissue. They are created naturally by the body to heal damaged skin or organs, according to RightHealth.com. Since the body cannot re-create new skin or tissue, it develops a scar that serves as a protective barrier.

Aloe vera gel is commonly used as a moisturizer for skin because it can help trap and lock in moisture. Aloe vera gel can be purchased from many stores -- especially health food outlets -- and can be used on its own or mixed with other products for hair application.

A scalp infection is often self-limiting. Most go away quickly thanks to the numerous lymph glands at the base of the scalp and the area's rich blood supply.

Water-resistant boots are very different from waterproof boots, and knowing the differences between the two is important for your comfort and -- more importantly -- your safety. Both are good for outdoor activities, but each type of boot protects your feet differently and in different conditions and activities.

Pimples pop up whether you're 13 or 35 -- and rarely do they go away overnight. No matter how hard you try to push the pimple party away, there will always be a few headstrong pustules that don't want to leave.

If you want to avoid an emergency buzz cut, equip yourself with the facts before bleaching your hair. Semi-permanent hair color offers natural hues that fade over time, and permanent hair dyes mix the decoloration and coloring process.

Cells make up every part of your body, and they require many nutrients to grow and repair properly. While all the vitamins and minerals you eat contribute to healthy cells, certain ones play a larger role in cell functions, such as vitamin A, phosphorus and zinc.